Home / 31,843.29-43,931.07-18,412.05

Finding the Fourth Proportional to 31,843.29, 43,931.07 and 18,412.05

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Solution

The fourth proportional to 31,843.29, 43,931.07 and 18,412.05 is: 25,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.29 : 43,931.07 = 18,412.05 : x
  2. Step 2: Convert to fraction form
    31,843.29/43,931.07 = 18,412.05/x
  3. Step 3: Cross multiply
    31,843.29x = 43,931.07 × 18,412.05
  4. Step 4: Simplify right side
    31,843.29x = 808,861,057.39
  5. Step 5: Solve for x
    x = 808,861,057.39/31,843.29
  6. Step 6: Final answer
    x = 25,401.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.